Home / 13,399.20-18,490.64-8,092.80

Finding the Fourth Proportional to 13,399.20, 18,490.64 and 8,092.80

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Solution

The fourth proportional to 13,399.20, 18,490.64 and 8,092.80 is: 11,167.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,399.20 : 18,490.64 = 8,092.80 : x
  2. Step 2: Convert to fraction form
    13,399.20/18,490.64 = 8,092.80/x
  3. Step 3: Cross multiply
    13,399.20x = 18,490.64 × 8,092.80
  4. Step 4: Simplify right side
    13,399.20x = 149,641,051.39
  5. Step 5: Solve for x
    x = 149,641,051.39/13,399.20
  6. Step 6: Final answer
    x = 11,167.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.